Question

What is the solution to the following system of equations? y = −x^2 − 5x − 4 y = −x^2 + 9x − 18

Answer 1

Answer:

X=1   Y= -10

Step-by-step explanation:

$Y=-x^{2} -5x-4 equation 1 \\Y=-x^{2} + 9x-18$ equation 2

using equation 1, we substitute in equation 2

We have

$-x^{2} -5x-4 = -x^{2} + 9x-18\\-14x=-14\\x=1$

so, we substitute the X value in equation2

we have>

$y=-(1^{2})+ 9(1)-18)=-10\\y=-10$